Arcen Games' addicting puzzle game Tidalis is on sale for 85% off as Steam's Daily Deal for today, and today only. That means until 10 AM PDT tomorrow--Wednesday, August 24--anyone can grab a copy (or copies) of Tidalis for just $1.50/€1.20/£1.05.

For those new to the game, Tidalis is a block-based puzzler with casual appeal, hardcore depth, and an addictive mechanic that utilities "streams" to clear blocks. Simple to learn, and difficult to master as it takes a bit of brainpower to set up combos of multiple chains, and the many brainteaser-style puzzles include some real challenges.

Tidalis also brings co-op and competitive multiplayer modes (both online and offline); action-oriented modes and timer-less brainteasers. On top of that, there's a lengthy, casual-friendly adventure mode; twenty unique game modes providing innumerable twists to the basic gameplay; dozens of special blocks and items; and over fifty minutes of beautiful music to go with the painterly art. All that for just a tiny fraction of the typical price!

It's the biggest individual discount the game has received to date, and of course extends to both PC and Mac versions--in fact players get both through SteamPlay. If there's any hesitance still hanging around, check out the Steam demo available for anyone to play. Or try Tidalis Lite, a free browser-based version of the game that runs on the Unity Web Player.

About Arcen Games

Arcen Games entered the PC indie scene in 2009 with their cult classic AI War: Fleet Command, which was named the 40th best-reviewed PC game of the year by MetaCritic. Their second year was a busy one, seeing the release of The Zenith Remnant, the first full expansion for AI War; Tidalis, an innovative block-based puzzle with casual appeal and hardcore depth; and Children of Neinzul, a micro-expansion for AI War with all profits benefiting the Child's Play charity, of which Arcen is a platinum sponsor.

AI War's third and largest expansion Light of the Spire marked Arcen's first release of 2011, and now the company has shifted its focus and excitement to the development of A Valley Without Wind. Originally a one-man shop, Arcen Games has grown to have half a dozen part-time or fulltime contributors to its various titles. For all the latest news, media coverage, and some of our other musings, follow us on our developer and individual game pages on Facebook or on Twitter: @ArcenGames.